CN103293985B - Zero consumption standby circuit - Google Patents
Zero consumption standby circuit Download PDFInfo
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- CN103293985B CN103293985B CN201210049044.4A CN201210049044A CN103293985B CN 103293985 B CN103293985 B CN 103293985B CN 201210049044 A CN201210049044 A CN 201210049044A CN 103293985 B CN103293985 B CN 103293985B
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Abstract
The invention discloses a kind of Zero consumption standby circuit, relate to household electrical appliance technical field, this circuit comprises: single-chip microcomputer, key press detecting circuit, strong electrical control circuit, described single-chip microcomputer is connected with described key press detecting circuit and strong electrical control circuit respectively, for receiving the forceful electric power button signal that described key press detecting circuit detects, and trigger connection or the disconnection that described strong electrical control circuit controls forceful electric power and electric equipment, described single-chip microcomputer connects light current power supply, described key press detecting circuit comprises strong and weak electricity spacer assembly, flows into single-chip microcomputer for isolating forceful electric power.Zero consumption standby circuit of the present invention not only achieves standby zero-power-consumption, and avoids potential safety hazard, enhances the security of circuit.
Description
Technical field
The present invention relates to household electrical appliance technical field, particularly a kind of Zero consumption standby circuit.
Background technology
At present, country constantly improves the requirement of the stand-by power consumption of household electrical appliance, and therefore the method for various reduction stand-by power consumption is arisen at the historic moment, low energy-consumption electronic device, control method etc.As washing machine is proposed a kind of control method of zero-power at first, the design due to former program controller for washer mostly adopts the mode on floating ground.As shown in Figure 1, when not having button to press, whole circuit is not charged, and when SW312 presses, circuit has electric current mistake, single-chip microcomputer work, is closed, now lift button SW312, still have electricity in circuit by control K1.When program end of run or key-press input end detect press SW312 again time, disconnect K1, now circuit forceful electric power disconnect, then whole circuit is in zero-power.
The design of above-mentioned zero power consumption circuit designs for floating ground mode, although can reach standby zero-power-consumption, security is not high, and the shortcoming of this circuit is:
1, in order to meet ground design, light current+5V and forceful electric power link together, as L ' end in Fig. 1, just couple together after K1 is closed, like this when having electric, whole circuit all can have forceful electric power, if household electrical appliances adopt some touch buttons, will cause getting an electric shock, so easy generation potential safety hazard.
During two ends L and the L ' connection of 2, button SW312, directly and single-chip microcomputer conducting, if single-chip microcomputer and the damage of whole circuit can be caused two ends L and L ' misconnection inverse time.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: how to realize the Zero consumption standby circuit that security is high.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of Zero consumption standby circuit, comprise: single-chip microcomputer, key press detecting circuit, strong electrical control circuit, described single-chip microcomputer is connected with described key press detecting circuit and strong electrical control circuit respectively, for receiving the forceful electric power button signal that described key press detecting circuit detects, and trigger connection or the disconnection that described strong electrical control circuit controls forceful electric power and electric equipment, described single-chip microcomputer connects light current power supply, described key press detecting circuit comprises strong and weak electricity spacer assembly, flows into single-chip microcomputer for isolating forceful electric power.
Wherein, described key press detecting circuit also comprises forceful electric power button, and described forceful electric power button connects described strong and weak electricity spacer assembly, and strong and weak electricity spacer assembly connects described single-chip microcomputer.
Wherein, described strong and weak electricity spacer assembly comprises photoelectrical coupler, the light emitting diode anode tap of described photoelectrical coupler connects described forceful electric power button, the cathode terminal of light emitting diode connects the zero line of forceful electric power, the emitter terminal ground connection of the phototriode of described photoelectrical coupler, phototriode collector terminal connects described single-chip microcomputer.
Wherein, described strong and weak electricity spacer assembly also comprises: the first resistance, the second resistance, the first diode and electric capacity, described first resistance, the first diode and Capacitance parallel connection are between the anode tap and cathode terminal of the light emitting diode of described photoelectrical coupler, and the cathode terminal of the light emitting diode of described photoelectrical coupler connects the zero line of forceful electric power by described second resistance.
Wherein, described strong electrical control circuit comprises: control electronic circuit and relay, described control electronic circuit connects described single-chip microcomputer and relay respectively, for the break-make of the contact switch of pilot relay to be switched on or switched off the connection of forceful electric power and electric equipment.
Wherein, described control electronic circuit comprises: triode, the 3rd resistance, the 4th resistance and the second diode, the base stage of described triode connects described single-chip microcomputer by the 4th resistance, grounded emitter, between the base stage that 3rd resistance is connected to described triode and emitter, described second diode is connected to the two ends of relay, and anode connects the collector of described triode, and negative electrode connects relay power.
(3) beneficial effect
Zero consumption standby circuit of the present invention adopts strong and weak electricity spacer assembly isolation forceful electric power to flow directly into single-chip microcomputer, ensure that the security of single-chip microcomputer and whole circuit; The closed rear forceful electric power of switch of relay is no longer directly connected with light current, avoids potential safety hazard, enhances the security of circuit.
Accompanying drawing explanation
Fig. 1 is a kind of Zero consumption standby circuit figure of prior art and the connection layout with household electrical appliances power supply;
Fig. 2 is a kind of Zero consumption standby circuit figure of the embodiment of the present invention;
Fig. 3 is the connecting circuit figure of Zero consumption standby circuit in Fig. 2 and household electrical appliances power supply.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 2, the Zero consumption standby circuit of the present embodiment comprises: single-chip microcomputer C, key press detecting circuit A, strong electrical control circuit B, single-chip microcomputer C is connected with key press detecting circuit A and strong electrical control circuit B respectively, for receiving the signal of the forceful electric power button SW1 that key press detecting circuit A detects, and trigger connection or the disconnection that strong electrical control circuit B controls forceful electric power and electric equipment.Single-chip microcomputer C connects light current power supply (5V), and key press detecting circuit A comprises strong and weak electricity spacer assembly, flows into single-chip microcomputer C for isolating forceful electric power.
In the present embodiment, key press detecting circuit A comprises: forceful electric power button SW1 and strong and weak electricity spacer assembly, and strong and weak electricity spacer assembly comprises photoelectrical coupler IC1, and forceful electric power button SW1 connects photoelectrical coupler IC1, and photoelectrical coupler IC1 connects single-chip microcomputer C.Particularly, the light emitting diode anode tap of photoelectrical coupler IC1 connects forceful electric power button SW1, the cathode terminal of the light emitting diode of photoelectrical coupler IC1 connects the zero line N of forceful electric power, the phototriode collector terminal of photoelectrical coupler IC1 connects single-chip microcomputer C, the emitter terminal ground connection of the phototriode of photoelectrical coupler IC1.Wherein, the phototriode collector terminal of photoelectrical coupler IC1 is connected the port I/O1 of single-chip microcomputer C usually with resistance R5 by pull-up resistor R4, when photoelectrical coupler IC1 break-make, and the port I/O1 level respective change of single-chip microcomputer C.The effect of R4 is, during photoelectrical coupler IC1 not conducting, the port I/O1 making single-chip microcomputer C is high level, is low level during conducting; The effect of R5 is the port I/O1 protecting single-chip microcomputer C, and R5 also can not need.
Preferably, strong and weak electricity spacer assembly also comprises some additional devices: resistance R3, resistance R2, diode D2 and electric capacity C1.Resistance R3, diode D2 and electric capacity C1 are connected in parallel between the first end of photoelectrical coupler IC1 and the second end, and second end of photoelectrical coupler IC1 connects zero line N by resistance R2.R3 and C1 forms resistance capaciting absorpting circuit, when SW1 switch, can play a protective role; The effect of D2 is protection IC1, prevents superpotential to the infringement of IC1; R2, for selecting power resistor, owing to being connected on forceful electric power, must meet the requirement of photoelectrical coupler IC1 conducting and own power.
In the present embodiment, strong electrical control circuit B comprises: control electronic circuit and relay K 1, controls electronic circuit and connects single-chip microcomputer C and relay K 1 respectively, for the break-make of the contact switch of pilot relay K1 to be switched on or switched off the connection of forceful electric power and electric equipment.
Particularly, control electronic circuit and comprise: triode N1, resistance R6, resistance R7 and diode D1, the base stage of triode N1 connects the port I/O2 of single-chip microcomputer C by resistance R7, grounded emitter, between the base stage that resistance R6 is connected to triode N1 and emitter.Diode D1 is connected to the two ends of relay K 1, and the collector of anode connecting triode N1, negative electrode connects the power supply (12V) of relay K 1.When one-chip machine port I/O2 output low level, the not conducting of N1 triode, relay K 1 control coil does not work, then relay contact can not adhesive, is off state; When one-chip machine port I/O2 exports high level, N1 conducting, relay K 1 control end coil electricity works, and relay contact adhesive is closure state.
As shown in Figure 3, be the Zero consumption standby circuit of the present embodiment and the connection layout of home appliance power supply, the principle of work of this Zero consumption standby circuit is as follows:
Live wire L (or zero line N) upper access forceful electric power button and relay, in the present embodiment, be connected on live wire L, operated and the control of relay K 1 is realized to normal work and standby zero-power-consumption by forceful electric power button SW1.
Connected with the mains by the power lead of household electrical appliances after socket, if when not carrying out any operation, forceful electric power is only present on lead-in wire, and on transformer circuit, forceful electric power does not enter, and therefore whole single-chip programming control device is in off-position, substantially achieves zero-power.By button conducting L and L ' (in A and B, L and L ' communicates) when SW1 first time in A presses, now forceful electric power access appliance power supply, in order to make whole system continued power, there is closing of two kinds of method control K1, one is when system just powers on, and the port I/O2 of direct control single chip computer exports high level signal control circuit control K1 and closes; Another kind method is for detecting that I/O1 mouth exports after high level, then it is closed to strong electrical control circuit controls K1 to export high level signal by the port I/O2 of single-chip microcomputer.After K1 is closed, L and L ' just conducting always in B, at this moment forceful electric power just no longer needs to be accessed by forceful electric power button SW1, but carrys out lasting access appliance power supply by K1, after system stability, lifts SW1 (forceful electric power button SW1 can lift rapidly after pressing); When again pressing and lift SW1, transmission signal is to the port I/O1 of single-chip microcomputer, and being high level when pressing, is square wave when lifting, and by judging, single-chip processor i/o 2 mouthfuls of output low level controls K1 disconnect, thus in disconnection B, L and L ' then enters standby zero-power-consumption state.
The present embodiment Zero consumption standby circuit adopt photoelectrical coupler IC1 to isolate forceful electric power to flow directly into single-chip microcomputer C, ensure that the security of single-chip microcomputer C and whole circuit; The closed rear forceful electric power of switch of relay K 1 is no longer directly connected with light current (5V), avoids potential safety hazard, enhances the security of circuit.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (4)
1. a Zero consumption standby circuit, comprise: single-chip microcomputer, key press detecting circuit, strong electrical control circuit, described single-chip microcomputer is connected with described key press detecting circuit and strong electrical control circuit respectively, for receiving the forceful electric power button signal that described key press detecting circuit detects, and trigger connection or the disconnection that described strong electrical control circuit controls forceful electric power and electric equipment, it is characterized in that, described single-chip microcomputer connects light current power supply, described key press detecting circuit comprises strong and weak electricity spacer assembly, flows into single-chip microcomputer for isolating forceful electric power;
Wherein, described strong and weak electricity spacer assembly comprises photoelectrical coupler, the light emitting diode anode tap of described photoelectrical coupler connects described forceful electric power button, the cathode terminal of light emitting diode connects the zero line of forceful electric power, the emitter terminal ground connection of the phototriode of described photoelectrical coupler, phototriode collector terminal connects described single-chip microcomputer;
Wherein, described strong and weak electricity spacer assembly also comprises: the first resistance, the second resistance, the first diode and electric capacity, described first resistance, the first diode and Capacitance parallel connection are between the anode tap and cathode terminal of the light emitting diode of described photoelectrical coupler, and the cathode terminal of the light emitting diode of described photoelectrical coupler connects the zero line of forceful electric power by described second resistance.
2. Zero consumption standby circuit as claimed in claim 1, it is characterized in that, described key press detecting circuit also comprises forceful electric power button, and described forceful electric power button connects described strong and weak electricity spacer assembly, and strong and weak electricity spacer assembly connects described single-chip microcomputer.
3. the Zero consumption standby circuit according to any one of claim 1 ~ 2, it is characterized in that, described strong electrical control circuit comprises: control electronic circuit and relay, described control electronic circuit connects described single-chip microcomputer and relay respectively, for the break-make of the contact switch of pilot relay to be switched on or switched off the connection of forceful electric power and electric equipment.
4. Zero consumption standby circuit as claimed in claim 3, it is characterized in that, described control electronic circuit comprises: triode, the 3rd resistance, the 4th resistance and the second diode, the base stage of described triode connects described single-chip microcomputer by the 4th resistance, grounded emitter, between the base stage that the 3rd resistance is connected to described triode and emitter, described second diode is connected to the two ends of relay, and anode connects the collector of described triode, negative electrode connects relay power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049044.4A CN103293985B (en) | 2012-02-28 | 2012-02-28 | Zero consumption standby circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210049044.4A CN103293985B (en) | 2012-02-28 | 2012-02-28 | Zero consumption standby circuit |
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| CN103293985A CN103293985A (en) | 2013-09-11 |
| CN103293985B true CN103293985B (en) | 2016-01-20 |
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| CN201210049044.4A Active CN103293985B (en) | 2012-02-28 | 2012-02-28 | Zero consumption standby circuit |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005199B (en) * | 2014-05-26 | 2016-03-23 | 惠而浦（中国）股份有限公司 | Control system for realizing one-key start of full-pole power-off washing machine and operation method thereof |
| CN104049208B (en) * | 2014-06-28 | 2016-12-07 | 惠而浦（中国）股份有限公司 | The double control switch keys deactivation detection method of washing machine |
| CN105699833B (en) * | 2014-11-28 | 2018-11-27 | 青岛海尔科技有限公司 | Washing machine forceful electric power switchs anti-inserted detection method, detection device and washing machine |
| CN105759206B (en) * | 2016-02-22 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of detection protection system of fan condition |
| CN105811950B (en) * | 2016-05-09 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of on/off circuit and washing machine of washing machine |
| CN105929744A (en) * | 2016-06-08 | 2016-09-07 | 珠海格力电器股份有限公司 | Power on/off circuit and household electrical appliance |
| CN106354055A (en) * | 2016-08-31 | 2017-01-25 | 深圳市中工巨能科技有限公司 | Zero-power-consumption standby and signal awakening device |
| CN107329422B (en) * | 2017-06-12 | 2020-12-22 | 青岛海尔洗衣机有限公司 | Household appliance control circuit and control method thereof |
| CN107656440A (en) * | 2017-08-14 | 2018-02-02 | 南京荟学智能科技有限公司 | A kind of Intelligent home device with real point detection |
| CN109765817A (en) * | 2018-12-28 | 2019-05-17 | 苏州市纽莱克电子科技有限公司 | Microcontroller power supply control circuit, single chip circuit and electrical equipment |
| CN112383207B (en) * | 2020-10-28 | 2021-08-27 | 四川长虹电器股份有限公司 | Zero-power-consumption standby control circuit and control method |
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| US7388306B2 (en) * | 2001-08-06 | 2008-06-17 | Emerson Electric, Co. | Appliance control system with power controller |
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| CN201081098Y (en) * | 2007-06-11 | 2008-07-02 | 蚬壳电器工业(集团)有限公司 | Alternating-current and/ or DC lamination device powered by AC |
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| CN103293985A (en) | 2013-09-11 |
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